Fig. 2: Hydrogen-induced skyrmion writing.
From: Reversible writing/deleting of magnetic skyrmions through hydrogen adsorption/desorption
a Perspective sketches of magnetization near spin reorientation transition in Ni/Co/Pd/W(110). b SPLEEM image of Ni/Co/Pd/W(110) (near SRT) on a local −Mz domain. Scale bar is 100 nm. c SPLEEM image at the same place as in panel b after 0.9 Langmuir hydrogen exposure, showing a bubble-like domain with +Mz. d Compound SPLEEM image resolving the bubble-like domain as a skyrmion. Black/light gray represent up/down magnetization of the perpendicularly magnetized domains (see symbols), respectively, and color wheel shows in-plane magnetization direction within domain walls (also shown by black arrows). e Histogram of angle \(\alpha\) between magnetization m and boundary normal n, measured pixel-by-pixel along domain boundaries, indicating left-handed chiral Néel walls. f Experimentally determined arrows-array representation of the skyrmion structure over a \(200\times 200{{{{{{\rm{nm}}}}}}}^{2}\) area, each arrow shows the magnetization vector direction of one pixel in panel d.
